Prediction of Small Bubble Holdups in Bubble Columns Operated with Various Organic Liquids at Both Ambient and Elevated Pressures and Temperatures
This article focuses on the prediction of the small bubble holdups (assuming the existence of two major bubble classes) in two bubble columns (0.289 m in ID and 0.102 m in ID), operated with organic liquids under various conditions (including high temperature and pressure). A new correction factor h...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Fluids |
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| Online Access: | https://www.mdpi.com/2311-5521/8/6/163 |
| _version_ | 1797594896093151232 |
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| author | Stoyan Nedeltchev |
| author_facet | Stoyan Nedeltchev |
| author_sort | Stoyan Nedeltchev |
| collection | DOAJ |
| description | This article focuses on the prediction of the small bubble holdups (assuming the existence of two major bubble classes) in two bubble columns (0.289 m in ID and 0.102 m in ID), operated with organic liquids under various conditions (including high temperature and pressure). A new correction factor has been established in the existing model for the prediction of the gas holdups in the homogeneous regime. The correction parameter is a single function of the Eötvös number (gravitational forces to surface tension forces), which characterizes the bubble shape. In addition, the behavior of small bubble holdups in 1-butanol (selected as a frequently researched alcohol) aerated with nitrogen, in a smaller BC (0.102 m in ID), at various operating pressures, is presented and discussed. The ratio of small bubble holdup to overall gas holdup, as a function of superficial gas velocity and operating pressure, has been investigated. All small bubble holdups in this work have been measured by means of the dynamic gas disengagement technique. |
| first_indexed | 2024-03-11T02:29:13Z |
| format | Article |
| id | doaj.art-df0264bd43ff40479ff6847f3ba2ccd5 |
| institution | Directory Open Access Journal |
| issn | 2311-5521 |
| language | English |
| last_indexed | 2024-03-11T02:29:13Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj.art-df0264bd43ff40479ff6847f3ba2ccd52023-11-18T10:23:10ZengMDPI AGFluids2311-55212023-05-018616310.3390/fluids8060163Prediction of Small Bubble Holdups in Bubble Columns Operated with Various Organic Liquids at Both Ambient and Elevated Pressures and TemperaturesStoyan Nedeltchev0Institute of Chemical Engineering, Polish Academy of Sciences, Baltycka Street No. 5, 41-100 Gliwice, PolandThis article focuses on the prediction of the small bubble holdups (assuming the existence of two major bubble classes) in two bubble columns (0.289 m in ID and 0.102 m in ID), operated with organic liquids under various conditions (including high temperature and pressure). A new correction factor has been established in the existing model for the prediction of the gas holdups in the homogeneous regime. The correction parameter is a single function of the Eötvös number (gravitational forces to surface tension forces), which characterizes the bubble shape. In addition, the behavior of small bubble holdups in 1-butanol (selected as a frequently researched alcohol) aerated with nitrogen, in a smaller BC (0.102 m in ID), at various operating pressures, is presented and discussed. The ratio of small bubble holdup to overall gas holdup, as a function of superficial gas velocity and operating pressure, has been investigated. All small bubble holdups in this work have been measured by means of the dynamic gas disengagement technique.https://www.mdpi.com/2311-5521/8/6/163bubble columnssmall bubble holdupgas disengagement techniquenew hydrodynamic modelcorrection factorpressure effect |
| spellingShingle | Stoyan Nedeltchev Prediction of Small Bubble Holdups in Bubble Columns Operated with Various Organic Liquids at Both Ambient and Elevated Pressures and Temperatures Fluids bubble columns small bubble holdup gas disengagement technique new hydrodynamic model correction factor pressure effect |
| title | Prediction of Small Bubble Holdups in Bubble Columns Operated with Various Organic Liquids at Both Ambient and Elevated Pressures and Temperatures |
| title_full | Prediction of Small Bubble Holdups in Bubble Columns Operated with Various Organic Liquids at Both Ambient and Elevated Pressures and Temperatures |
| title_fullStr | Prediction of Small Bubble Holdups in Bubble Columns Operated with Various Organic Liquids at Both Ambient and Elevated Pressures and Temperatures |
| title_full_unstemmed | Prediction of Small Bubble Holdups in Bubble Columns Operated with Various Organic Liquids at Both Ambient and Elevated Pressures and Temperatures |
| title_short | Prediction of Small Bubble Holdups in Bubble Columns Operated with Various Organic Liquids at Both Ambient and Elevated Pressures and Temperatures |
| title_sort | prediction of small bubble holdups in bubble columns operated with various organic liquids at both ambient and elevated pressures and temperatures |
| topic | bubble columns small bubble holdup gas disengagement technique new hydrodynamic model correction factor pressure effect |
| url | https://www.mdpi.com/2311-5521/8/6/163 |
| work_keys_str_mv | AT stoyannedeltchev predictionofsmallbubbleholdupsinbubblecolumnsoperatedwithvariousorganicliquidsatbothambientandelevatedpressuresandtemperatures |